|  | ; These tests should not contain a sign extend. | 
|  | ; RUN: llc < %s -march=ppc32 | not grep extsh | 
|  | ; RUN: llc < %s -march=ppc32 | not grep extsb | 
|  |  | 
|  | define i32 @test1(i32 %mode.0.i.0) { | 
|  | %tmp.79 = trunc i32 %mode.0.i.0 to i16 | 
|  | %tmp.80 = sext i16 %tmp.79 to i32 | 
|  | %tmp.81 = and i32 %tmp.80, 24 | 
|  | ret i32 %tmp.81 | 
|  | } | 
|  |  | 
|  | define signext i16 @test2(i16 signext %X, i16 signext %x)  { | 
|  | %tmp = sext i16 %X to i32 | 
|  | %tmp1 = sext i16 %x to i32 | 
|  | %tmp2 = add i32 %tmp, %tmp1 | 
|  | %tmp4 = ashr i32 %tmp2, 1 | 
|  | %tmp5 = trunc i32 %tmp4 to i16 | 
|  | %tmp45 = sext i16 %tmp5 to i32 | 
|  | %retval = trunc i32 %tmp45 to i16 | 
|  | ret i16 %retval | 
|  | } | 
|  |  | 
|  | define signext i16 @test3(i32 zeroext %X)  { | 
|  | %tmp1 = lshr i32 %X, 16 | 
|  | %tmp2 = trunc i32 %tmp1 to i16 | 
|  | ret i16 %tmp2 | 
|  | } | 
|  |  |